Shopify's Meta AI channel: product image variants from Sume

Shopify's changelog says Meta now appears alongside other AI channels in Agentic Storefronts, and that products are shared with Meta by default through Shopify Catalog. Sume does not connect to that channel; what it does is make the product media you put in your Shopify catalog: a per-model range for images per request (1 to 4 in the docs example), in a stated list of aspect ratios, plus a video through a Format.

Shopify's statements are from its changelog entry, read 2026-10-01. Sume facts are from the image generation and bulk runs docs.

What did Shopify announce?

The entry says Meta is now an AI channel in your admin, products are shared with Meta by default through Shopify Catalog, and you can manage access for Catalog and direct checkout and view performance for Meta in your agentic settings. It does not list image sizes or video requirements, so use Shopify's and Meta's own product media specs for those.

How many image variants can one request make?

The image models endpoint reports n as a range per model. The docs example for bytedance-seed/seedream-4.5 shows n from 1 to 4, input_references from 0 to 10, and output_format of png, jpeg or webp. Read supported_parameters for the model you pick, because a model only accepts the values its catalog descriptors list.

Which aspect ratios should a catalog set include?

The docs list 1:1 and name 4:5 as the Instagram portrait shape. Generate the same product in a few ratios by changing aspect_ratio only, and keep the prompt and input_references the same so the product stays recognizable. The post facebook catalog extra product angles shows the reference approach.

How do I do this for a whole catalog?

For video, a first-party Format can be run per product, and a bulk request queues up to 100 Format runs with a concurrency window. Poll GET /v1/format-run-queues/{id} and read each child at GET /v1/format-runs/{run_id}. See product video for Shopify Catalog for the video side.